From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Required modifications to the 25HP synchromesh gearbox concerning pinion length and reverse shaft bush clearance.
| Identifier | ExFiles\Box 104\4\ scan0096 | |
| Date | 27th January 1932 | |
| 85310. By.{R.W. Bailey - Chief Engineer} From Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls} Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls}4/MA. 27. 1. 32. 25HP SYNCHROMESH GEARBOX. It is important that when engaging 1st gear the 2nd speed sliding pinion should pick up the reverse shaft before 1st gear engages, according to the N.Sch. by .075. On the box built up to drawing they both engaged simultaneously. The length of the torsionally free 1st and 2nd pinion should therefore be shortened by .075 on the drawing. The white metal bushes of the reverse shaft should have .0035 clearance as we have found that with less clearance they seized. Hs{Lord Ernest Hives - Chair}/H.Grylls. | ||